<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        div{
            width: 100px;
            height: 100px;
            background-color: blueviolet;
            /* box-shadow: 5px 5px 5px black; */
        }
        div:hover{
            box-shadow: 0 15px 15px rgba(0, 0, 0, 0.5), 0 0 10px 0 rgba(0,0,0,1);
        }
       
    </style>
</head>
<body>
   <div>
      div1
   </div>
</body>
</html>